3r+1/2(4-8)=12 - solution

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Solution for 3r+1/2(4-8)=12 equation:

r in (-oo:+oo)

3*r+(1/2)*(4-8) = 12 // - 12

3*r+(1/2)*(4-8)-12 = 0

3*r-14 = 0 // + 14

3*r = 14 // : 3

r = 14/3

r = 14/3

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